/*!
 * Particleground
 *
 * @author Jonathan Nicol - @mrjnicol
 * @version 1.1.0
 * @description Creates a canvas based particle system background
 *
 * Inspired by http://requestlab.fr/ and http://disruptivebydesign.com/
 */
!(function(a, b) {
  "use strict";
  function c(a) {
    a = a || {};
    for (var b = 1; b < arguments.length; b++) {
      var c = arguments[b];
      if (c)
        for (var d in c)
          c.hasOwnProperty(d) &&
            ("object" == typeof c[d] ? deepExtend(a[d], c[d]) : (a[d] = c[d]));
    }
    return a;
  }
  function d(d, g) {
    function h() {
      if (y) {
        (r = b.createElement("canvas")),
          (r.className = "pg-canvas"),
          (r.style.display = "block"),
          d.insertBefore(r, d.firstChild),
          (s = r.getContext("2d")),
          i();
        for (
          var c = Math.round((r.width * r.height) / g.density), e = 0;
          c > e;
          e++
        ) {
          var f = new n();
          f.setStackPos(e), z.push(f);
        }
        a.addEventListener(
          "resize",
          function() {
            k();
          },
          !1
        ),
          b.addEventListener(
            "mousemove",
            function(a) {
              (A = a.pageX), (B = a.pageY);
            },
            !1
          ),
          D &&
            !C &&
            a.addEventListener(
              "deviceorientation",
              function() {
                (F = Math.min(Math.max(-event.beta, -30), 30)),
                  (E = Math.min(Math.max(-event.gamma, -30), 30));
              },
              !0
            ),
          j(),
          q("onInit");
      }
    }
    function i() {
      (r.width = d.offsetWidth),
        (r.height = d.offsetHeight),
        (s.fillStyle = g.dotColor),
        (s.strokeStyle = g.lineColor),
        (s.lineWidth = g.lineWidth);
    }
    function j() {
      if (y) {
        (u = a.innerWidth),
          (v = a.innerHeight),
          s.clearRect(0, 0, r.width, r.height);
        for (var b = 0; b < z.length; b++) z[b].updatePosition();
        for (var b = 0; b < z.length; b++) z[b].draw();
        G || (t = requestAnimationFrame(j));
      }
    }
    function k() {
      i();
      for (
        var a = d.offsetWidth, b = d.offsetHeight, c = z.length - 1;
        c >= 0;
        c--
      )
        (z[c].position.x > a || z[c].position.y > b) && z.splice(c, 1);
      var e = Math.round((r.width * r.height) / g.density);
      if (e > z.length)
        for (; e > z.length; ) {
          var f = new n();
          z.push(f);
        }
      else e < z.length && z.splice(e);
      for (c = z.length - 1; c >= 0; c--) z[c].setStackPos(c);
    }
    function l() {
      G = !0;
    }
    function m() {
      (G = !1), j();
    }
    function n() {
      switch (
        (this.stackPos,
        (this.active = !0),
        (this.layer = Math.ceil(3 * Math.random())),
        (this.parallaxOffsetX = 0),
        (this.parallaxOffsetY = 0),
        (this.position = {
          x: Math.ceil(Math.random() * r.width),
          y: Math.ceil(Math.random() * r.height)
        }),
        (this.speed = {}),
        g.directionX)
      ) {
        case "left":
          this.speed.x = +(
            -g.maxSpeedX +
            Math.random() * g.maxSpeedX -
            g.minSpeedX
          ).toFixed(2);
          break;
        case "right":
          this.speed.x = +(Math.random() * g.maxSpeedX + g.minSpeedX).toFixed(
            2
          );
          break;
        default:
          (this.speed.x = +(
            -g.maxSpeedX / 2 +
            Math.random() * g.maxSpeedX
          ).toFixed(2)),
            (this.speed.x += this.speed.x > 0 ? g.minSpeedX : -g.minSpeedX);
      }
      switch (g.directionY) {
        case "up":
          this.speed.y = +(
            -g.maxSpeedY +
            Math.random() * g.maxSpeedY -
            g.minSpeedY
          ).toFixed(2);
          break;
        case "down":
          this.speed.y = +(Math.random() * g.maxSpeedY + g.minSpeedY).toFixed(
            2
          );
          break;
        default:
          (this.speed.y = +(
            -g.maxSpeedY / 2 +
            Math.random() * g.maxSpeedY
          ).toFixed(2)),
            (this.speed.x += this.speed.y > 0 ? g.minSpeedY : -g.minSpeedY);
      }
    }
    function o(a, b) {
      return b ? void (g[a] = b) : g[a];
    }
    function p() {
      console.log("destroy"),
        r.parentNode.removeChild(r),
        q("onDestroy"),
        f && f(d).removeData("plugin_" + e);
    }
    function q(a) {
      void 0 !== g[a] && g[a].call(d);
    }
    var r,
      s,
      t,
      u,
      v,
      w,
      x,
      y = !!b.createElement("canvas").getContext,
      z = [],
      A = 0,
      B = 0,
      C = !navigator.userAgent.match(
        /(iPhone|iPod|iPad|Android|BlackBerry|BB10|mobi|tablet|opera mini|nexus 7)/i
      ),
      D = !!a.DeviceOrientationEvent,
      E = 0,
      F = 0,
      G = !1;
    return (
      (g = c({}, a[e].defaults, g)),
      (n.prototype.draw = function() {
        s.beginPath(),
          s.arc(
            this.position.x + this.parallaxOffsetX,
            this.position.y + this.parallaxOffsetY,
            g.particleRadius / 2,
            0,
            2 * Math.PI,
            !0
          ),
          s.closePath(),
          s.fill(),
          s.beginPath();
        for (var a = z.length - 1; a > this.stackPos; a--) {
          var b = z[a],
            c = this.position.x - b.position.x,
            d = this.position.y - b.position.y,
            e = Math.sqrt(c * c + d * d).toFixed(2);
          e < g.proximity &&
            (s.moveTo(
              this.position.x + this.parallaxOffsetX,
              this.position.y + this.parallaxOffsetY
            ),
            g.curvedLines
              ? s.quadraticCurveTo(
                  Math.max(b.position.x, b.position.x),
                  Math.min(b.position.y, b.position.y),
                  b.position.x + b.parallaxOffsetX,
                  b.position.y + b.parallaxOffsetY
                )
              : s.lineTo(
                  b.position.x + b.parallaxOffsetX,
                  b.position.y + b.parallaxOffsetY
                ));
        }
        s.stroke(), s.closePath();
      }),
      (n.prototype.updatePosition = function() {
        if (g.parallax) {
          if (D && !C) {
            var a = (u - 0) / 60;
            w = (E - -30) * a + 0;
            var b = (v - 0) / 60;
            x = (F - -30) * b + 0;
          } else (w = A), (x = B);
          (this.parallaxTargX =
            (w - u / 2) / (g.parallaxMultiplier * this.layer)),
            (this.parallaxOffsetX +=
              (this.parallaxTargX - this.parallaxOffsetX) / 10),
            (this.parallaxTargY =
              (x - v / 2) / (g.parallaxMultiplier * this.layer)),
            (this.parallaxOffsetY +=
              (this.parallaxTargY - this.parallaxOffsetY) / 10);
        }
        var c = d.offsetWidth,
          e = d.offsetHeight;
        switch (g.directionX) {
          case "left":
            this.position.x + this.speed.x + this.parallaxOffsetX < 0 &&
              (this.position.x = c - this.parallaxOffsetX);
            break;
          case "right":
            this.position.x + this.speed.x + this.parallaxOffsetX > c &&
              (this.position.x = 0 - this.parallaxOffsetX);
            break;
          default:
            (this.position.x + this.speed.x + this.parallaxOffsetX > c ||
              this.position.x + this.speed.x + this.parallaxOffsetX < 0) &&
              (this.speed.x = -this.speed.x);
        }
        switch (g.directionY) {
          case "up":
            this.position.y + this.speed.y + this.parallaxOffsetY < 0 &&
              (this.position.y = e - this.parallaxOffsetY);
            break;
          case "down":
            this.position.y + this.speed.y + this.parallaxOffsetY > e &&
              (this.position.y = 0 - this.parallaxOffsetY);
            break;
          default:
            (this.position.y + this.speed.y + this.parallaxOffsetY > e ||
              this.position.y + this.speed.y + this.parallaxOffsetY < 0) &&
              (this.speed.y = -this.speed.y);
        }
        (this.position.x += this.speed.x), (this.position.y += this.speed.y);
      }),
      (n.prototype.setStackPos = function(a) {
        this.stackPos = a;
      }),
      h(),
      { option: o, destroy: p, start: m, pause: l }
    );
  }
  var e = "particleground",
    f = a.jQuery;
  (a[e] = function(a, b) {
    return new d(a, b);
  }),
    (a[e].defaults = {
      minSpeedX: 0.1,
      maxSpeedX: 0.7,
      minSpeedY: 0.1,
      maxSpeedY: 0.7,
      directionX: "center",
      directionY: "center",
      density: 1e4,
      dotColor: "#666666",
      lineColor: "#666666",
      particleRadius: 7,
      lineWidth: 1,
      curvedLines: !1,
      proximity: 100,
      parallax: !0,
      parallaxMultiplier: 5,
      onInit: function() {},
      onDestroy: function() {}
    }),
    f &&
      (f.fn[e] = function(a) {
        if ("string" == typeof arguments[0]) {
          var b,
            c = arguments[0],
            g = Array.prototype.slice.call(arguments, 1);
          return (
            this.each(function() {
              f.data(this, "plugin_" + e) &&
                "function" == typeof f.data(this, "plugin_" + e)[c] &&
                (b = f.data(this, "plugin_" + e)[c].apply(this, g));
            }),
            void 0 !== b ? b : this
          );
        }
        return "object" != typeof a && a
          ? void 0
          : this.each(function() {
              f.data(this, "plugin_" + e) ||
                f.data(this, "plugin_" + e, new d(this, a));
            });
      });
})(window, document),
  /**
   * requestAnimationFrame polyfill by Erik Möller. fixes from Paul Irish and Tino Zijdel
   * @see: http://paulirish.com/2011/requestanimationframe-for-smart-animating/
   * @see: http://my.opera.com/emoller/blog/2011/12/20/requestanimationframe-for-smart-er-animating
   * @license: MIT license
   */ (function() {
    for (
      var a = 0, b = ["ms", "moz", "webkit", "o"], c = 0;
      c < b.length && !window.requestAnimationFrame;
      ++c
    )
      (window.requestAnimationFrame = window[b[c] + "RequestAnimationFrame"]),
        (window.cancelAnimationFrame =
          window[b[c] + "CancelAnimationFrame"] ||
          window[b[c] + "CancelRequestAnimationFrame"]);
    window.requestAnimationFrame ||
      (window.requestAnimationFrame = function(b) {
        var c = new Date().getTime(),
          d = Math.max(0, 16 - (c - a)),
          e = window.setTimeout(function() {
            b(c + d);
          }, d);
        return (a = c + d), e;
      }),
      window.cancelAnimationFrame ||
        (window.cancelAnimationFrame = function(a) {
          clearTimeout(a);
        });
  })();
